Airtac SCJ32 Standard Cylinder SCJ32X125-75
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X125-75 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø32mm bore, 125mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke125 mm
- Stroke adjust-75 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X125-75
The SCJ32X125-75 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, letting you fine-tune the 125mm nominal stroke down by up to 75mm without swapping the unit. Its 12mm diameter piston rod and PT1/8 port deliver 402N of push force at 0.5MPa, ideal for light-duty positioning tasks that need on-machine tweaking.
A rear-cap adjusting screw sets the retract end position, making it suitable for commissioning trials, format changeovers, or taking up mechanical wear over time. The tie-rod body construction measures 182mm long in the base configuration, and the cylinder operates on 40µm filtered air from 0.15 to 1.0MPa across a -20 to +70°C temperature range.
Airtac SCJ32 Standard Cylinder SCJ32X125-75 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X125-75 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 125 mm |
| Stroke adjustment | Up to 75 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1000 mm |
Specifications follow the official AirTAC SCJ (adjustable-stroke) datasheet. The rear adjusting screw sets the stroke end position; force is the same as the equivalent single-rod SC bore. Confirm against the product label before installation. Thread options: PT (standard) / G.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
SCJ is single-rod, so force matches the equivalent SC bore: push uses the full bore area, pull subtracts the rod area. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
Model Code: Airtac SCJ32 Standard Cylinder SCJ32X125-75
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×125 | Nominal (maximum) stroke length in mm. |
| -75 | Adjustable-stroke range in mm (options 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod, fixed stroke), SCD (double rod), SCT (multi-position). SCJ mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac SCJ32 Standard Cylinder SCJ32X125-75 Is Used
Commissioning & Setup
Dial in the exact retract end position during machine commissioning with the 75mm adjustment range, eliminating the need for custom spacer blocks or multiple cylinder swaps to find the optimal stroke.
Small-Part Sorting Gates
Use the adjustable stroke to fine-tune the opening of a diverter gate on a compact conveyor. The 402N push force at 0.5MPa is ample for lightweight product handling, and the screw adjustment allows quick format changes.
Wear Take-Up on Clamps
In a light-duty clamping fixture, the 75mm adjust range lets operators compensate for jaw or pad wear over time by simply turning the rear screw to restore the correct clamping position, extending service intervals.
Is the Airtac SCJ32 Standard Cylinder SCJ32X125-75 the Right Cylinder?
Step up to the 40mm bore SCJ for 628N of push force at the same 0.5MPa if the 402N output of this 32mm unit is marginal. For applications where the stroke never needs field adjustment, a fixed-stroke SC32X125 is a simpler, lower-cost alternative. This SCJ32X125-75 is a direct replacement for another AirTAC SCJ32 adjustable-stroke cylinder with a 125mm nominal stroke, 75mm adjust range, PT ports, and basic mounting.
For the 125mm stroke, rod deflection under side load is minimal, but if the load is not guided, consider adding an external linear guide to protect the rod bearing and seal from premature wear.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear adjusting screw, then lock it before running.
- check Adjust end cushion screws for smooth stops.
- check Use SCJ mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCJ32 Standard Cylinder SCJ32X125-75 FAQ
At 0.5MPa, the cylinder produces 402N of push force and 345N of pull force. The maximum operating push force at 0.9MPa is 724N. Because it is a single-rod cylinder, the push force is always higher than the pull force due to the rod area on the retract side.
The rear cap has an integrated adjusting screw that acts as a movable end stop for the piston. You can shorten the stroke end position by up to 75mm from the 125mm nominal maximum. This adjustment is mechanical and only changes the stroke end point; it does not alter the cylinder's force output or speed.
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